Grace Brewster Murray Hopper (née Murray; December 9, 1906 – January 1, 1992) was an American computer scientist and United States Navy rear admiral. In 1944, she was one of the first programmers of the Harvard Mark I computer and invented the first compiler for a computer programming language. She popularized the idea of machine-independent programming languages, which led to the development of COBOL, one of the first high-level programming languages.

Owing to her accomplishments and her naval rank, she was sometimes referred to as "Amazing Grace". The U.S. Navy Arleigh Burke-class guided-missile destroyer USS Hopper was named for her, as was the Cray XE6 "Hopper" supercomputer at NERSC.

Stephen Gary "Steve" Wozniak (born August 11, 1950), nicknamed "Woz", is an American inventor, electronics engineer, programmer, and technology entrepreneur who co-founded Apple Inc. He is known as a pioneer of the personal computer revolution of the 1970s and 1980s, along with Apple co-founder Steve Jobs.

Wozniak single-handedly developed the 1976 Apple I, which was the computer that launched Apple.

Katherine Coleman Goble Johnson (born August 26, 1918) is an African-American physicist and mathematician who made contributions to the United States' aeronautics and space programs with the early application of digital electronic computers at NASA. Known for accuracy in computerized celestial navigation, she conducted technical work at NASA that spanned decades. During this time, she calculated the trajectories, launch windows, and emergency back-up return paths for many flights from Project Mercury, including the early NASA missions of John Glenn and Alan Shepard, and the 1969 Apollo 11 flight to the Moon, through the Space Shuttle program. Her calculations were critical to the success of these missions. Johnson also did calculations for plans for a mission to Mars.

#ScienceMarch Poster #13: zoologist and primatologist Dian Fossey (January 16, 1932 – c. December 26, 1985), famous for her decades of studying mountain gorillas, documented in her book Gorillas in the Mist.

Poster 12 features computer scientist and information theorist Claude Shannon, who invented the system of bits (1s and 0s) which laid the foundation of the modern computer revolution. He is said to have come up with many of his best ideas while juggling on his unicycle.

Poster 11 in the American Science series features botanist, agricultural scientist and inventor George Washington Carver (1860s – January 5, 1943). His pioneering work in sustainable agriculture brought new life to depleted American farmlands in the early 20th century.

The ninth poster in the American Science series features nuclear physicist Chien-Shiung Wu (May 31, 1912 – February 16, 1997), Manhattan Project scientist famous for conducting the Wu Experiment which contradicted the law of conservation of parity.